#1D4B99#1D4B99

#1D4B99 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.8% C 0.137 H 260.3°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B99
RGB	rgb(29, 75, 153)
HSL	hsl(218, 68%, 36%)
HSV	hsv(218, 81%, 60%)
CMYK	cmyk(81%, 51%, 0%, 40%)
CIE-LAB	lab(33.12, 14.22, -47.07)
CIE-LCH	lch(33.12, 49.18, 286.81°)
OKLab	oklab(42.81% -0.0231 -0.1355)
OKLCH	oklch(42.81% 0.137 260.3)
XYZ	xyz(8.7705, 7.5922, 31.1340)
Luminance	0.0759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B99 #996B1D

analogous

#1D8999 #1D4B99 #2D1D99

triadic

#1D4B99 #991D4B #4B991D

tetradic

#1D4B99 #991D89 #996B1D #1D992D

square

#1D4B99 #991D89 #996B1D #1D992D

split-complementary

#1D4B99 #992D1D #89991D

monochromatic

#091932 #133266 #1D4B99 #2764CC #5286DE

Accessibility & contrast

On white

8.34

#1D4B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1D4B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B99

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B99	#FFFFFF	#000000	##FFFFFF
##1D4B99	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B549C

Deuteranopia (green-blind)

#004997

Tritanopia (blue-blind)

#005E6A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1d4b99;
/* rgb */ color: rgb(29, 75, 153);
/* oklch */ color: oklch(42.8% 0.137 260.3);

Tailwind

colors: {
  custom: {
    50: '#6e7cb8',
    500: '#1d4b99',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b99;
$custom-light: #6e7cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b99",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 153
  },
  "hsl": {
    "h": 217.742,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42809,
    "c": 0.13743,
    "h": 260.3
  },
  "luminance": 0.07593
}

Semantic roles & 50–950 ramp

primary

#1D4B99

secondary

#C19751

accent

#AA3DEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4B99

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →